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// java.io.File
// An implementation of the Java Language Specification section 22.24
// Written by Charles Briscoe-Smith; refer to the file LEGAL for details.
package java.io;
public class File {
public static final String separator =
System.getProperty("file.separator");
public static final char separatorChar = separator.charAt(0);
public static final String pathSeparator =
System.getProperty("path.separator");
public static final char pathSeparatorChar = pathSeparator.charAt(0);
private String pathname;
public File(String path) throws NullPointerException
{
if (path==null) throw new NullPointerException();
pathname=path;
}
public File(String dir, String name) throws NullPointerException
{
if (name==null) throw new NullPointerException();
if (dir==null)
pathname=name;
else
pathname=dir+separatorChar+name;
}
public File(File dir, String name) throws NullPointerException
{
this(dir.getPath(), name);
}
public String toString()
{
return pathname;
}
public boolean equals(Object o)
{
try {
return ((File) o).getPath().equals(pathname);
} catch (NullPointerException e) {
return false;
} catch (ClassCastException e) {
return false;
}
}
public int hashCode()
{
return pathname.hashCode() ^ 1234321;
}
public String getName()
{
return pathname.substring(pathname.lastIndexOf(separatorChar));
}
public String getPath()
{
return pathname;
}
public String getAbsolutePath()
{
throw new InternalError("getAbsolutePath() unimplemented.");
}
public String getParent()
{
throw new InternalError("getParent() unimplemented.");
}
public boolean isAbsolute()
{
return pathname.charAt(0)==separatorChar;
}
public boolean exists() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("exists() unimplemented.");
}
public boolean canRead() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("canRead() unimplemented.");
}
public boolean canWrite() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkWrite(pathname);
throw new InternalError("canWrite() unimplemented.");
}
public boolean isFile() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("isFile() unimplemented.");
}
public boolean isDirectory() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("isDirectory() unimplemented.");
}
public long lastModified() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("lastModified() unimplemented.");
}
public long length() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("length() unimplemented.");
}
public boolean mkdir() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkWrite(pathname);
throw new InternalError("mkdir() unimplemented.");
}
public boolean mkdirs() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkWrite(pathname);
throw new InternalError("mkdirs() unimplemented.");
}
public String[] list() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("list() unimplemented.");
}
public String[] list(FilenameFilter f) throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkRead(pathname);
throw new InternalError("list(FilenameFilter) unimplemented.");
}
public boolean renameTo(File dest) throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkWrite(pathname);
if (sec!=null) sec.checkWrite(dest.getPath());
throw new InternalError("renameTo(File) unimplemented.");
}
public boolean delete() throws SecurityException
{
SecurityManager sec=System.getSecurityManager();
if (sec!=null) sec.checkWrite(pathname);
throw new InternalError("delete() unimplemented.");
}
}
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